Respuesta :
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( She had been participating in songwriting contests since she was ten: nothing fulfilled her more than music.)
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Answer:
She had been participating in songwriting contests since she was ten: nothing fulfilled her more than music.
Explanation:
One of the uses of colon is to use it between two sentences. You can see that separated by colons, there are two complete sentences and the second one is in fact something that is related to what is stated before.